A sweet Christmas special that riffs off O. Henry's The Gift of The Magi. The Milky Holmes girls are at their zaniest and the feel of the episode is very comparable to the first season, where broad gag humour is the main course. The episode mostly focuses on the relationship between the detectives and phantom thieves celebrating the holidays together and of course G4 shows up and Kokoro spouts some adorable nonsense. A gift for longtime fans who want to see more of the characters they know and love but this is not an accessible starting off point for those unfamiliar with the series.
I'd give the episode a 7 but it gets a bonus point because I don't think The Feathers show up at all.